Scoparia largispinea, Li, Weichun, Li, Houhun & Nuss, Matthias, 2010

Li, Weichun, Li, Houhun & Nuss, Matthias, 2010, Taxonomic revision of Scoparia Haworth, 1811 (Lepidoptera: Crambidae: Scopariinae) from China, Zootaxa 2609, pp. 1-33 : 24-25

18. Scoparia largispinea sp. n.

( Figs. 12, 21–22 , 30 )

Type material. China: Holotype: 3, Lianhuaping, Leigongshan (26.28°N, 108.17°E), Guizhou Province, 1600 m, 17.ix.2005, leg. Jialiang Zhang (genitalia slide no. LWC08088). Paratypes: Guizhou Province: 2 ƤƤ, Dashahe, Daozhen (28.53°N, 107.36°E), 1450 m, 23-24.v.2004, leg. Shulian Hao (genitalia slide no. LWC06190); 2 ƤƤ, Linjiang, Xishui (28.19°N, 106.12°E), 500–550 m, 26-27.ix.2000, leg. Haili Yu; Henan Province: 5 3, 3 ƤƤ, Baotianman, Neixiang (34.02°N, 111.05°E), 1200 m, 20-27.v.2006, leg. Jinmei Lv and Xu Zhang (genitalia slide nos. LWC06284, LWC06285, LWC06286, LWC06287); 1 3, Qihe, Lushi (34.03°N, 111.02°E), 1500 m, 27.v.2000, leg. Haili Yu (genitalia slide no. LWC06014), NKUM.

Diagnosis. This species is unique by the sacculus with a sclerotized ventral fold and the phallus with a thin and long apical spine in the male genitalia.

Description. Adult ( Fig. 12). Forewing length 6.0–8.0 mm. Frons and vertex pale brown mixed with white. Labial palpus blackish brown except first segment white ventrally at base. Maxillary palpus blackish brown, white basally and distally. Antenna with scapus pale brown dorsally, white ventrally; flagellomeres with dorsal surface blackish brown and white alternately, ventral surface pale yellow to pale brown. Patagium pale brown to blackish brown. Thorax pale brown mixed with white. Tegula pale brown to blackish brown, with long, pale brown-tipped white scales on posterior margin. Forewing covered with sparse blackish brown scales; antemedian line white, broad, outcurved slightly; antemedian stigmata not connected with antemedian line; rounded proximal discoidal stigma pale yellow edged by blackish brown, ovate cubital stigma blackish brown; distal discoidal stigma blackish brown, tinged with pale yellow on inner side, 8-shaped, connected with blackish brown spot at costa; postmedian line white, meeting costa and dorsum perpendicularly, conspicuously dentate towards distal discoidal stigma, incurved near dorsum; subterminal line white, conspicuously incurved medially, forming X together with postmedian line; fringe white, with pale brown subbasal line. Hindwing white; fringe concolorous with forewing. Legs white, sparsely suffused with blackish brown scales on outer side; tarsi blackish brown and white alternately on outer side. Abdomen grey to pale brown.

Male genitalia ( Figs. 21–22 ). Uncus ovate. Gnathos slender, nearly as long as uncus, pointed apically. Valva with same width throughout; costa gently convex, with small slender basal prong; apex rounded. Sacculus with sclerotized ventral fold, its basal two fifths broad, nearly ovate, with dense granules, distal three fifths narrow and long, dentate dorsally, tapering to free distal process; free distal process at three fourths of valva. Juxta broadened from slightly narrow base to about middle, then divided into two broad branches, posteriorly forming V-shaped incision. Phallus nearly as long as valva, distal third armed with sclerotized pleats, bearing easy removed hexagonal sclerotized ring; opening for ductus ejaculatorius at about basal one fourth of phallus; apical spine well developed, about third as long as phallus, bending towards base of phallus; subterminal of phallus with five to thirteen spinelike cornuti of various size.

Female genitalia ( Fig. 30 ). Papilla anale ovate, slightly shorter than apophysis posterior. Tergite eight about half length of apophysis anterior. Antrum sclerotized strongly, folded longitudinally, with dense granules and tiny spines; curved at anterior third; anterior third as thick as colliculum, posterior two thirds about twice as thick as colliculum. Ductus bursae curved slightly before colliculum, with sparse tiny spines at base; posterior half armed with sinuate sclerotized pleats. Corpus bursae rounded, half longitudinal area covered with dense small spines, other half area covered with dense granules; signum elongate ovate, placed in granular area; appendix bursae ovate.

Distribution. China (Guizhou, Henan).

Etymology. The specific name is derived from the Latin prefix larg- = large and the Latin spineus = spinous, in reference to the phallus with a big apical spine in male genitalia.

Remarks. This species varies in the male genitalia. In the specimen collected from Qihe of Henan Province, the valva is broader, the sacculus is convex ventrobasally, the distal part of the phallus is thicker than its medial part, and the apical spine of phallus is tapering to tip ( Fig. 22 ); whereas in the specimens collected from other localities, the valva is narrower, the sacculus is straight ventrally, the distal part of phallus is as thick as or thinner than its medial part, and the apical spine is thickened medially ( Fig. 21 ).

Figures

FIGURES 21 – 22. Male genitalia of Scoparia largispinea sp. n. (a, male genitalia capsule; b, phallus; c, cornuti): 21, holotype, genitalia slide no. LWC 08088; 22, paratype, genitalia slide no. LWC 06014.

FIGURES 29 – 30. Female genitalia of Scoparia spp.: 29, S. bifaria sp. n., paratype, genitalia slide no. LWC 08160; 30, S. largispinea sp. n., paratype, genitalia slide no. LWC 06286.